DISTANCE EDUCATION
M.Sc. (Chemistry) DEGREE EXAMINATION,
DECEMBER 2017.
Second Semester
INSTRUMENTAL METHODS OF ANALYSIS
(2008 onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
Each question carries 20 marks.
x 20
1. How will you distinguish between intra molecular
and inter molecular hydrogen bonding by IR
spectroscopy?
Following the Woodward Fieser rules, Calculate the
absorption maximum for the following compounds.




Discuss the various types of electronic transitions
and explain the effect of polarity of the solvent on
each type of transition.
Sub. Code
14
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wk10
2. Write down the applications of the ultra-violet
spectroscopy.
Write notes on
Over tone and
Combination bands.
What are the factors which influence of absorption
frequencies from their normal value?
3. Explain the term spin-spin coupling? Why does a
peak for a particular set of protons split into a
multiplet? Give examples.
Describe with examples, the various factors which
affect magnitude of the chemical shift.
Discuss briefly hyper-fine splitting in ESR spectra.

4. Briefly describe C13 NMR spectroscopy. What are
the advantages of it over proton magnetic resonance
spectroscopy?
Compare ESR and NMR spectra.
Write the importance of values in ESR spectra.

5. Write detailed description of
McLafferty rearrangement and
Meta stable ions.
What is the importance of meta stable ion?
Illustrate with example octant rule.
Write down the principle involved in HPLC.
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wk10
6. Explain different types of cotton effect curves and
write their applications.
Write a short notes on
Nitrogen rule and
-halo ketone rule with example.
Write down the principle involved in thin layer
chromatography.
7. What do you understand by differential thermal
analysis? What useful results can you get by this
technique?
Discuss the principle and applications of
fluorimetry.
Write down the difference between nephelometry
and turbidimetry.
8. Give the principle of electro gravimetric analysis.
What are the different factors which are necessary
to be controlled during electro gravimetric analysis?

Explain how polarographic methods are used for
qualitative and quantitative analysis.
Write down the applications of cyclic voltametry.
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